<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="edu.sctu.*" %><%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/3/31
  Time: 15:42
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<%
    if (session.getAttribute("username")==null){
        response.sendRedirect("login.jsp");
    }
%>
<style type="text/css">
    table{border-collapse:collapse
    }
 td{border: 1px solid #000;
    padding:10px;
    }
</style>
<jsp:include page="header.jsp"></jsp:include>
<table>
    <tr>
        <td>编号</td>
        <td>姓名</td>
        <td>密码</td><!--ctrl+D-->
        <td>删除操作</td>
        <td>更新操作</td>
    </tr>
    <%

        List<User> userList = new ArrayList<User>();
//    User wenwen=new User();
//    wenwen.id=1;
//    wenwen.username="wenqiuju";
//    wenwen.password="126444";
//    userList.add(wenwen);
        //3+1
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;
        String sql = "select * from t_users";
        //加载驱动程序
        Class.forName("com.mysql.jdbc.Driver");
        connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",//数据库连接字符串
                "root",
                "123456");
        statement = connection.createStatement();
        resultSet = statement.executeQuery(sql);
        while (resultSet.next()) {
            int id = resultSet.getInt(1);
            String username = resultSet.getString(2);
            String password = resultSet.getString(3);
            User u = new User();
            u.setId(id);
            u.setName(username);
            u.setPassword(password);
            userList.add(u);
        }
        resultSet.close();
        statement.close();
        connection.close();
       pageContext.setAttribute("userList",userList);
    %>
    <c:forEach var="user" items="${userList}">
        <tr>
            <td>${user.id}</td>
            <td>${user.name}</td>
            <td>${user.password}</td>
            <td><a href='deleteUserHander.jsp?id=${user.id}'>删除</a></td>
            <td><a href='UserUpdate.jsp?id=${user.id}&username=${user.name}&password=${user.password}'>更新</a></td>
        </tr>
    </c:forEach>
</table>
<!--include指令 -->
<%@include file="footer.jsp"%>
</body>
</html>
